Emerson AMS Trex User Manual page 107

Figure 3-39:
To power a FOUNDATION fieldbus device, the Trex unit needs the FOUNDATION fieldbus Power Plug. When
the Trex unit powers a device, it also provides two terminators and a power conditioner.
WARNING!
The Trex unit can power only one FOUNDATION fieldbus device.
A.
Figure 3-40:
For small fieldbus segments, the power conditioner and terminators can be contained in a single wiring
block.
Note
You can connect the Trex unit at any convenient place along the fieldbus segment (bus). In the field, this is
typically done at the device or at the fieldbus junction box. The drawing below is one example.
A.
B.
C.
D.
User Guide
Power and connect to a FOUNDATION fieldbus device
FOUNDATION fieldbus Power Plug
Connect to an externally-powered FOUNDATION fieldbus device
Terminators
Power conditioner
Fieldbus power supply
Host system
Field Communicator application
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